Look up the Kardashev Scale, then lookup Dark Forest Hypothesis. Lookup Moore's law, and then lookup habitable planets, planetary science, astrobiology, and interstellar travel. Then lookup Einstein's theory of relativity and time dilation. Then lookup the dangers of interstellar travel/long term exposure to microgravity and radiation on biological organisms (like humans) and realize that any aliens with interstellar travel technology are likely NOT BIOLOGICAL and would likely be some form of self replicating AI/computer/machine. Look up Von Neumann Machines. Then reread the Dark Forest hypothesis again. Then familiarize yourself with the Kardashev scale, Moore's law, and the Drake Equation. Look [READ MORE]